K.H Becker , J.C Lörzer , R Kurtenbach , P Wiesen , T.E Jensen , T.J Wallington
{"title":"Contribution of vehicle exhaust to the global N2O budget","authors":"K.H Becker , J.C Lörzer , R Kurtenbach , P Wiesen , T.E Jensen , T.J Wallington","doi":"10.1016/S1465-9972(00)00017-9","DOIUrl":null,"url":null,"abstract":"<div><p>Assessment of the impact of vehicle emissions on the global environment requires accurate data concerning nitrous oxide (N<sub>2</sub>O) emissions. We report herein `real world' N<sub>2</sub>O emissions from road vehicles in a tunnel in Wuppertal, Germany, together with `laboratory' emission measurements conducted at the Ford Motor Company using a chassis dynamometer with a standard driving cycle for 26 different cars and trucks. Consistent results were obtained from both approaches suggesting that a good approximation of the average emission factor (g N<sub>2</sub>O/g CO<sub>2</sub>)=(4<!--> <!-->±<!--> <!-->2)<!--> <!-->×<!--> <!-->10<sup>−5</sup>. This corresponds to an emission rate of 11-5 mg N<sub>2</sub>O/km for vehicles with fuel economies of 12-6 l/100 km (20–40 miles/US gallon). N<sub>2</sub>O emissions from vehicles have a global warming impact, which is 1–2% of that of the CO<sub>2</sub> emissions from vehicles. We estimate an annual emission of (0.12±0.06) Tg yr<sup>−1</sup> of N<sub>2</sub>O (0.08±0.04 Tg N yr<sup>−1</sup>) from the global vehicle fleet which represents 1–4% of the atmospheric growth rate of this species. These results update and supercede our previous study of N<sub>2</sub>O emissions from vehicles (Becker, K.H., Lörzer, J.C., Kurtenbach, R., Wiesen, P., Jensen, T., Wallington, T.J., 1999. Nitrous oxide (N<sub>2</sub>O) emissions from vehicles. Environ. Sci. Technol., 33, 4134–4139).</p></div>","PeriodicalId":100235,"journal":{"name":"Chemosphere - Global Change Science","volume":"2 3","pages":"Pages 387-395"},"PeriodicalIF":0.0000,"publicationDate":"2000-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1465-9972(00)00017-9","citationCount":"26","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemosphere - Global Change Science","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1465997200000179","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 26
Abstract
Assessment of the impact of vehicle emissions on the global environment requires accurate data concerning nitrous oxide (N2O) emissions. We report herein `real world' N2O emissions from road vehicles in a tunnel in Wuppertal, Germany, together with `laboratory' emission measurements conducted at the Ford Motor Company using a chassis dynamometer with a standard driving cycle for 26 different cars and trucks. Consistent results were obtained from both approaches suggesting that a good approximation of the average emission factor (g N2O/g CO2)=(4 ± 2) × 10−5. This corresponds to an emission rate of 11-5 mg N2O/km for vehicles with fuel economies of 12-6 l/100 km (20–40 miles/US gallon). N2O emissions from vehicles have a global warming impact, which is 1–2% of that of the CO2 emissions from vehicles. We estimate an annual emission of (0.12±0.06) Tg yr−1 of N2O (0.08±0.04 Tg N yr−1) from the global vehicle fleet which represents 1–4% of the atmospheric growth rate of this species. These results update and supercede our previous study of N2O emissions from vehicles (Becker, K.H., Lörzer, J.C., Kurtenbach, R., Wiesen, P., Jensen, T., Wallington, T.J., 1999. Nitrous oxide (N2O) emissions from vehicles. Environ. Sci. Technol., 33, 4134–4139).